The fund captures the US equity large-cap space by tracking a capped version of the well-known index, the S&P 500, which covers approximately 80% of available market capitalization. The fund defines large-caps as the S&P Committee sees it, which means it includes a fairly large allocation to firms that may be considered mid-caps. Stocks are market-cap-weighted, with a consideration of sector balance by comparing the weight of each GICS (Global Industry Classification Standard) sector in the underlying index to its weight in the relevant market capitalization range of the S&P Total Market Index. A 3% weight cap is applied to all constituent issuers. The index is rebalanced on a quarterly basis.